Air treatment unit



FIG. 1 is a perspective view of an air treatment unit showing the top,front and right sides;

FIG. 2 is a perspective view of the air treatment unit shown in FIG. 1showing the top, rear and left sides;

FIG. 3 is a front elevational view of the air treatment unit of FIG. 1;

FIG. 4 is a top plan view of the air treatment unit shown in FIG. 1; and

FIG. 5 is a bottom plan view of the air treatment unit of FIG. 1.

FIG. 6 is a right side elevational view of the air treatment unit ofFIG. 1, a left side elevational view being a mirror image of FIG. 6;and,

FIG. 7 is a rear side elevational view of the air treatment unit of FIG.1.

The broken lines showing the bottom portion, the slot on the rear side,the protrusion on the front side, and the air openings and centerportion of the upper end of the air treatment unit, are for illustrativepurposes only and form no part of the claimed design.

The ornamental design for an air treatment unit, as shown and described.